Liquid-dispensing apparatus



AVAILABLE COPY March 30 1926. 1,578,585

J. B. DAWS JIQUID DISPENSING APPARATUS Filed Nov. 7, 1921 4 Sheets-Sheet1 "INVENTOR "ATTORN EYS.

BEST AVARLABLE com March 30 1926. 1,578,585

J. B. DAVIS LIQUID DISPENSING APPARATUS Filed Nov. 7, 1921 4Sheets-Sheet2 INVENTR 1 ATToRNEYa p, BE$T AWMLABLE m March 30 1926. 7 1,578,585

J. B. DAVl S LIQUID DISPENSING APPARATUS Filed Nov. 7 1921 4Sheets-Sheet .'5

4 INVENTOR ATTORNEYS.

BEST AVNLABLE CCDPE LIQUID DI SPENS ING APPARATUS Filed Nov. 7 1921 4Sheets-Sheet 4 I mv A 4. aw

BY Z04 9" ATTORNEYS.

BEST AVAELABLE COP;

Patented Man 30, 1926.

siesa's UNITED STATES PATENT OFFICE.

JOHN B. DAVIS, OF SPRINGFIELD, MASSACHUSETTS. ASSIGNOR 'I'O GILBERT &BAB- KER MANUFACTURING COMPANY. A CORPORATION OF DIAESACHUSETTS.

LIQUID-DISPENSING APPARATUS.

Application filed November 7, 1821. "Serial No. 513,368.

m liquid dispensing apparatus, which. while capable of generalapplication, is particularl v adapted for use in dispensing gasoline andthe like.

The invention. in one aspect, seeks to pro- 5 vide. in connection with areciprocating piston pump and its actuating means,' a measuring chamberor reservoir connected to be supplied from the pump, together with a.slidahle discharge pipe for the reservoir movable to' various dischargepositions to permit different measured quantities to be dispensed, andmeans operable as the pipe is moved to any of its various dischargepositions to lock the pump actuating means.

Another object of the invention is to provide a. dispensing1CS81VOll'-Of the visible measuring type which can heapplied to 'astandard non-visible measuring pump. char- :u'terized in that thereservoir is applied in place of the usual cap on the upper end of thecasing which houses the pump piston rod in its reciprocating movement,such cas- 7 in: also serving to house parts of the discharge mechanismfor the reservoir and the operating mechanism-therefor.

Another object of the invention is to provide a registering mechanismfor totaliz. ing the quantities discharged, characterized in that itisoperated by the setting of the sliding discharge pipe andproportionately to the movement thereoi,

Another object of the invention is to so arrange the registeringmechanisim'which operates step by'step as the discharge pipe moves fromone position to another, that, the movement of the pipe from oneposition to the next, is registered in advance shortly after leaving oneposition and considerably before reaching the next. position.'

Another object of the invention is to arrange the-registering mechanismto indicate ,cylinder g. 5 is a horizontal sectional view'taken half thequantity discharged from the reservoir as the discharge pipe is movedinto position to discharge such quantity and to register-the remainderduring the return ,movement of said pipe.

Other objects and advantages relate to various details of construction,as will appear from the following description.

The invention will be best understood from a. description of thepreferred embodiment thereof, illustrated inthe accompanying drawings,in which 'Fig. 1 is a view, in front elevation, of the improved liquiddispensing apparatus;

Fig. 2 is a vertical sectional view of a. small portion of the reservoirshowing, in

elevation, certain elements associated there- Flg. 3 is a fragmentaryfront elevational view of the lower portion of the pump, the

outer casing and portion of one of the power cylinders;-

/Fig. 4 is a view. partially in front elevation and partially in centralvertical section, of the portion of the Fi on the line 5-5 of Fig. 4;

Fig. 6 is a horizontal sectional view taken on the line 6-6 of Fig. 4;

Fig. I is a detail view showing, in side elevation, a portlon of thecountrng mechamsm- I Fifi. 8 is a detail view, partially in side'elevation and partially in section, of the mechanism for setting thedischarge means {0 deliver difierent. measured quantities of iquid'= iFigI Q is'a horizontal sectional view'taken on the line 9-9 of Fig. 4..the crank handle having been removed and the protruding porti n of thecrank shaft being enclosed by means of a safety housing;

Fig. 10 is a sectional detail view of a looking device for the settingmechanism;

Fig. 11 is a detail sectionalwiew taken substantially along the line11+-.l1 of Fig. 9, showing the drain valve; an

Fig. 12 is a sectional view taken along the line 1-2 12 of Fig. 4.

Referring to the drawn: the greater pump above the pump part of theillustrated apparatus is enclosed within a casing comprising a lowercylindrical member 14 (Figs. 1 and 4), an upper '7 member 16 ofelliptical cross-sectional contour, and an intermediate member 18, thelatter being constructed-and arranged to fit over the top of the lowercasing member 1S and within the bottom of the upper casing member 16..Located within the lower casing member 14 is a pump cylinder 20 whichis connected by a pipe 22 (Fig. 8) with a source of liquid supply (notshown) andby a pipe 24 with a transparent .IGSGIVOII or measuringchamber 26 which issupported upon a frame member 28 which surmounts theupper casing member 16. The actuating mechanism for the pump piston issubstantially the same in construction and mode of operation, as thatdisclosed in the inventors copending application Serial No. 4Q1,966,filed August 1920, and consequently it will. not be necessary todescribe said mechanism in detail herein, reference being made tosaidapplication for a complete disclosure thereof. For present purposes,t w ll be sufiicient to state that the pump piston (not shown) isadapted to be actuated either by power or manually, as may bedesired-and briefly to describe the operating mechanism as follows: Thepiston rod 30 (Fig. 4) of the pump piston (not shown) carriesa crosshead32 which is adapted to reciprocate within the intermediate and upperportions of the pump casing and which is connected, at its oppositeends, to the upper extremities of a pair of rack bar operating rods 34.The lower ends of the rods 34 are provided with pistons, one of which isshown at 36 in Fig.

3. and these pistons fit within cylinders 38 which are adapted to besupplied with compressed air or other fluid under pressure, the fluidbeing admitted to the cylinders 38 beneath the pistons or exhaustedtherefrom through connections 40 under the control of a suitable valve(not shown). Uponthe admission of air to the cylinders 38, the operating rods 34; are raised to actuate the pump piston through its suctionstroke, while'the exhaustion of air from said cylinders permits the pumppiston, which is of heavy construction...to he returned by. gravity intoposition for the start of another suction stroke. To enable the pump tobe operated by hand when desired, a pair of pinions 42 which are securedupon a rotatable horizontal shaft 44 are arranged to mesh with the teethof the rack bar operating rods, and a crank handle 46 is rotatablymounted at one end of the shaft 44.- and is adapted to be clutched tosaid shaft so as to enable the lattcr to be rotated to raise theoperating rods. Not only all the above-named parts, but also the pumpcasing. hereinbe'fore-mentinned, are substantially the same inconlructiow as corresponding elements dc- BEST AVAELABLE COP\ scribed inthe application already referred to.

The frame member 28 which surmounts the pump casing and supports thereservoir 26 comprises a Ibwcr disk-like plate 50 (Fig. 4) whichservesfas cap to close the to of the upper casing member 30,'an upstan'ng cylindrical neck 52, and a horizontal annular rim 54; projectingoutwardly from the top of the neckf'b2. A vertically disposed annularfiange 66 depends from the marginal portion of the plate 50 and fitswithin the upper end of. the casing member 16 to which it is rigidlysecured. A horizontal web 58 extends across the interior of the neck 52,intermediate the upper and lower ends thereof, and beneath the web acurved vertical wall 60 and'a horizontal wall 62 serve in conjunctionwith portions of said web and of the wall of said neck to form a disoralcylindrical form having its side wall' constructed of lass. As shown, anopen ended glass cyhnder 70 is arranged with its axis vertical and itslower edge resting within an annular groove in therim 54 of the framemember 28. The upper edge of the glass cylinder iSjdiSPOSQd'ln a groovein the lower face of a disk or cap plate 72 and the cap plate and therim 54 are drawn together by means of tie rods 74 so that the glasscylinderis securely held in place to form a fluid-tight reservoir Thecap plate 72 may be surmounted by a hood 76 as shown in Fig. 1. Ifdesired. the cylindrical shell 26 may be constructed of opaque materialand provided with one or more transparent insertsfor rendering visiblethe level .of the liquid within the reservoir. The interior of the neck52, above the web 58, communicates with. the interior of the reservoirthus forming a pocket 78 in the base of the letter into which the'pipe24 delivers ply through the pump casing, through the neck of the framemember 28 at one side,

of the discharge chamber 64. and through the reservoir to a point justbelow the cap plate 72. Threaded upon the upper end of the overflow pipe'80 is an adjustable inlet portion 82 which is capable of bei'ng turnedand thus raised or lowered to vary the ef-' fective height of theoverflow pipe. The inlet portion 82 is adapted to be adjusted so thatafter the pump has been operated to fill the reservoir a small quantityof the liquid will escape through the overflow pipe and the liquidremaining in the reservoir will h of the tie-rods 74.

4 imeasm'p-d ammmt l 2 108 to engage and position the crank m nidepending fromthepluto 50, said container mum q tit f fi or well beingof slightly greater diameter ;1Qr *()1'd1ngly"the stops 120 are sospacedan-- i i E AvAeAeLEeoPw"e come to rest at the proper level relatively")pun'ip casing at the point where said rod 2. scale 84 by which thequantities of liquid p sses thr ugh the web 58, and dispensed. areindicated. The scale 84, us necessity of employing a stuffing box atthis shown in Fig. 1,may conveniently be formed point where thearrangement of parts is of e'series of individual markers 86 which u hth t it would be diffi ult, to properly are secured at'graduatedintervals upon one on truct, or ndjusta stuffing hox.

Af l' p mp as M t t w tfi t fi to permit the projection therethrough ofthe reservoir-26 and the liquid within the fl f e d f th shaft Inn andis sereservon' has'been li i0 3 p cured along its periphery to :1 casing118 :Ihinedlevel through the agency of the ore-1' that is seirured tothe front. of the pump citsflow pipe 80, the sliding discharge pipe (38ing member 16. 'A plurality of stoppius i5 Set'tO draw from H10 the 't'130 project from the time of the dial plate pipe 68 is open' at bothends and, when and thus to position the discharge pipe (38' moved into.y its 'f vertically for the withdrawal from the res positions, its upperend'is in constant (031- i f different measured quantities of municationwith the reservoir.

The lower liquid. .In the illustrated .eppamtps, the

avoids the portion of pipe 68 extends into a well voi 26 is adapted todispense .a maxigallons of-liquid -and,

'. han th d s harg pip 68 d cmnmlmiwtr gularly.about the-dial 108 that.when the ing at its upper end with chamber 64. .The d scharge pipe 6 Ethe discharge pipe 68 will he so set asto mounted Vertical S I S-IQ mpermit the discharge of theunit'quantit t g comblned fl' Stuffingindicated on the dial beside thstop engage 92 that is provided withinthe frame member Th proper id f h sto tq d fin the 28 to insure aliquid-tight connection at the m d the discharge crank :irm 106 engagesany of these s tops,'

quantity indicated, -is that which "base of.v the reservoir. To enablethe disk] fi t b g d-by th k.

.charge pipe'to be set for the withdrzi'wal Of 106- on clockwiserevolution of the latter.

ditt'renti measured quantities ofliquid from T e mit thi crank 10f} t lgb c the reservoir 26 h g pn' ofihe S- tain of the stops 120 it ismade-in two parts hai'ge pipe 68 s connected by e cross-he d which arepivoted togetherat 122,1'113 clearly.

.ber 28 and into the easing member 1!}.

" a y operableisetfing mechanism, to he lifted sutliciently t'o'nnssallot-the stops 120 except the fire gallon -.'stop', whichis shown inFig; 10 and; whicln as Will-"be- ,ralek teeth 10$ on .the operating rod96. when'its outer 91105011 i.fi. (l:1t themnxi-' F xed tothe otherendof saidshaft-is a fmmu amountpermissibltggAll of lth e fstopsf' l lwhich momble across 120.. are adjustable in'la'L'siInih r fnianner, v:31the fac erof 3 c rcular dial. plate 108. The {which-isillustratedminF-ig 10 J Shaft is in a hearis shown i ns: nd f ng.

1 94 with a rack-bar operatingrod; 96,- which' shown in Fig.-- 8'. ,A'spriltgffl'fnormally l 9 x e d e lywz the item holds the two sectionsof the'crank arm in-a -r common plane but permitsthe. outer sectiondicated generally at 98 in Fig. 1, is pro 'vided for the discharge pipe68 and such 82 1 5 QS in g N seen from a comnerison-ofjts heightwith io5-.P f 'a.'h Shaft fl f l those shown in Fig.8, is sutliciently high toat one end a gear which meshes with pr event passage o f f he c fankeven wherein .-the

hous ng 112.-

.en'tricalhn'l w -l hich encloses the gear passes through thedialllfiSr'endljs'clamped andthrough which the'rack-har Operating thew, by anut B l fh ihg e l, r g1 96-"extends; The housing- 112 issupter,'.the'stop may he turned and adjusted i ported by meansof asleeve. 114- which surt rio s positions, Wit? 1; limits, necesroundstheoperating rod 96* between the .g housing 112;1 md the weh'58, saidsleeve-lie The ,diseliarge mg threaded or otherwise secured at ts. tImQSwhen liquid xs-bmgdischarged from $.1 cha w y as Provide q i permostposition and,' vhen'-thus positionezl,

connectione at these points. The. operating the crank- 'arm106engages,instep 130, which,

' rod extends below th'e'housing 112 and is as shown in Fig. 10, iss'o;construc ted as to 68. during the -120 opposite ends to said web andhousing In the chamher 26 isnormally held in its upi there tenelos'edwithin. alim id-tight housing 4 cured to the housing 112. Theabove-described provision for housingethe 0p rating L rod 96 and thegenr'102 insures against v leakage of liquid from the reservoir into thepivoted intermediate its ends to such dial engages in a recess in thecrank arm 106 and holds it against clockwise movement, movement in theopposite direction being restrained by the sto 130. A spring 136 acts vbetween therear ace of dial 108 and the other endf lever 134 toconstantly urge the detent 132 outwardly so that, as arm 106 is swunginto'the illustrated position, the detent automatically snaps intoengagement with it. .The casing 118 is provided with a recess 138,located inconspicuously, as in its under face, through whichrecess.access may be had to lever 134 for the pu ose of manuallyeffecting the withdrawal 0 detent 132 and the unlocking of crank arm106.

The registration .of the quantities dispensed from the pump is effectedby a totalizing register,'indicated conventionally at 140, whichregister is actuated by the sliding movements of the discharge pipe 68.Register 140 is of the well-known cumulative or cyclometer type andrequires no detailed description. It is fixed to the rear face of dial108 and its indications are visible through an opening 142 in thelatter. The actuating shaft of register 140 is shown at i 144 in Fig. 7and this shaft carries'a ratchet 146, with which is associated a holdingpawl 148. An actuating pawl 150, pivoted to a lever 152 pivotallymounted on shaft 144, is arranged to reciprocate and on one stroke ofeach reciprocationto move ratchet 146 one step, say one Lever 152 isconnected by a link 154 to one end of a lever 156 which ispivoted-intermediate itseuds to dial v108.-andcarries at its" other enda V- shaped detent 158. The; latter rides on the periphery of a disc 160fixed to the described shaft 100 and this disc has a plurality (five asillustrated) of V-shaped notches 162 into which the detent 158successively drops as crank handle 106 is turned in.either direction.-As the detent becomes positioned over- "a notch 162, the weight oflever ,156 carries its left-hand end (as viewed in. Fig. 4) downwardly,thereby raising its other end and moving pawl 150 without moving theratchet. v As the disc 160-continues to turn discharge pipe in advanceand prevent it from being moved any substantial distance withoutoperating the register. This prethe detentf158 is forced upwardly out ofthe the right-handend downwardly, there-f BEST AVAlLABLE COP\ vents anoperator from cheating his em ployer and works noinjury on the purchaserbecause the latter should check the operator by observing the setting ofthe crank arm and level of liquid in chamber 26. Since the disc 160 whenturned in either direction ope tes th'e register, onehalf the quantityis registered on clockwise movement of the crank arm 106 and the otherhalf on reverse movement thereof. The operator, therefore,cannotpossibly manipulate the crank arm 106 without operating theregister 140 to indicate that the discharge pipe has been moved to aposition to permit discharge; whether or not such dis- -charge has.taken'place and, since registration of each step of movement is made inadvance, there is no chance for the operator to cheat his employer bymanipulation of this crank arm. v

To further protect the employer, means are provided: whereby the pumpcannot be operated while pipe 68 occupies any ,of its dischargepositions. This prevents the operator from setting the pipe 68 andregistering a small amount, say one gallon, by the setting operation,and then operating the pump over and over again to-supply the chamber 26and to discharge therefrom at the same time, all without any indication,other than thedisproportionate one named, on the register. To this end,a clutch element 164 (Fig. 9) is fixed on the shaft 44, which, asalready described, turns during reciprocation of the pump piston. Amating clutch element 166 is carried on one end of a lever 168 whichispi'voted intermediate its ends to the top wall of pump 20. A ring 170fits loosely over element 164 and is urged by a spring 17 2 againstelement 166, thereby tending to hold these elements disengaged.

To engage these elements, a cam 17 4 is fixed to shaft and one end oftlever 176 rides upon the peripheiyof this cam. Lever 176 consists of arod which extends downwardly through casing 118 thence downwardlythrough the upper wall of casing 18 and into the latter, where it issupported by resting .upon the free end of lever 168, the latter rhaving a vertical hole therein to loosely re- .ceive the necked down endoflever 176. i The latter is held against upward displacement byacolla'r 178. which cooperates with the inner surface of casing 18 forthis purpose, and the fulcrum for lever 176 isconstituted 1 by thecasing 18-.itself,'such fulcrum being located slightly above the collar178. The cam 174 consists-oft; circular disc except for a.- fiat portion'180.which- 'para]lels the crank arm 106' and which, when the latterengages stop 130, permits the upper end of lever 17 6 to move to theright, as'viewed in Fig. 4, thereby permitting spring 172 to sep- 'aratethe clutch el ents 164 and 166 and release the pump for operation. Assoon as rompers BE-8T LABLE CQPY 8 crank arm 106 is movedaway from stop130, cam 17% moves lever 176 into the illussupply the chamber 26 untilthe s iding discharge pipe 68 has been raised to its uppermostposition.- As pipe 68 nears this position,. itengages a. valve 180(Figs. 2 and 4) the stem 182 of'which is mounted for vertical slidingmovement in a'l sleeve 184: which is fixed to'und depends from the topwall 72 of chamber 26. A pin 186, fixed to stem 182, projects through alongitudinal slot in sleeve 'l8l and limits the extent of movement ofstem 182. A spring 188 encircles the latter and acts between the lowerend of sleeve 184: and the upper face of valve 18H to hold the latterinits lower position. After the pipe68 engages valve 180, it continues tomovie a short distance. in order to compress spring 188 and insure thatvalve 180 15 tightly pressed against the upper end of pipe 68. The.latter is thus closed at its upper end .prior to the inflow of liquidinto. chamber :16, and thus no liquid can ente this pipe, or the well orchamber 6- until the pipeis moved to discharge position.CQhisisimportaxit, since .the markers 86 are located to graduate thechamber 26"when the pipe is inits upper position and. if the pipe wasleftopen, overmeasure would result. If it.:were possible to fill chamber26 when pipe 68 was set in any at a number of various .positions, 116accuiacy ofmeasurement would follow '-for varying additional amounts-ofliquid would be contained in pipe 68, depending on its position; Asshown,- the'chaniber 26 dischar es to-the level of the discharge 68, thelowest level being that indicate y the line 1 1 in Fig-'.4 and thedischarge ipe and discharge chamber 64 drain to the e\'cl-':b -a:.-

The discharge 1pipe will always be emptydow-nto this love at thepend-ofa dispensing operation and since it 'mustbe lifted'to' its upperposition'prior' to replenislimentof chamber 26-- m which position -'tsupper end is-closedl it is k ept empty until again moved to one of-itsdischargepositions; 'T-he'ap aratus'cannot be oper ated in .any but eprescribed wa'yfand,

when so operated cai'motinaccurately --measure, ifthe chamber126 is.--properly duated and stops 120 properly set. To further guard againstinaccuracy of measurement, which'may under certain circumstances occurdue to a' siphon, action tending todraw out liquid from the dischargechamber 64 and well 90 below the k we] (Li-0:, an anti-siphon device is'provided. Such device consists of a vent pas s..ge. for, the otherwiseclosed chambenfi and Zshez-clu shown as a pipe 190 leading erated fromthe top wall 58 of,chamber 64 and extending upwardly into the measuringchamher-26 to a position well above the top of the overflow pipe 80 intothe air space of chamber 26. An automatic vent valve is' also associatedwith the latter,,as shown in- Fig. 2, whereina valve 192, attached to afloat 194. is-arranged to engage a valve seat 196 as the liquid rises inchamber 26- and close an air inlet passage. 198 provided in the top 72of .the chamber. On recemion of the liquid; valve 192 drops bygravityand opens this passage to admit air to replace the liquid'andrevent the creation ofa vacuum in chain 2'. 26. The float 194 and so itsattached valve 192 are located in a sleeve' 200, secured to anddepending from the member 72, and a pin 202 passin diametrically throughsleeve 200 limits the '(lOWD-i' means, which; while j capable ofactuation at other times, is automatically actuatedby thellockin of theapparatus. From the base of chamber 26, admin pipe 204 leads Vdownwardly, through neck .52 outside chain-z ber 64-, through casing 16and into the'casing 18, where it isconn'ected to the upper-end: of adrain valve 206. The lower en of the latter is connected by. afpipe; 208to the:

overflow pipe 80, which as already '105 v leadsback to the supply tank.-Tha locatz6rk of the drain valvis b'eist shown-" ,in Fig-.-9 Y and itsinterior construction-21h 'Fig.-'=-11-.- The valve 206' has-a vertical210* therethrou'gh, intermediate the" ends of which is a seat 212-.- A cvalve" element' 'v21,f-, v a guide tubefi ri z b ni r he to seat 212 by'action to' -'c losifoii' communication-between pi 204"and'208i. Openings218 are provid in;-'tubo' -216,ito@11l$ permit s'uchcommunicatiofi-whenvalve "214 is raised from'its seat. The-'lifting'of the ;valve isdictated b' -the action ofja pim' 22-)"whichis'slidabljmounted-inthe-casing of valve 212 and hasaf-foiin'de'dfindliven-5'12? gauge the lower end ofi'tubel'mfiwhen thefpin isforcedinwardp oito" passago*210;- Pin 2'20 passesoutwardly" from-the valve casing through a-suitable-jstufling box,-as mtlicated, and isoflfset; assho'vm in Fig- 9,1 and the'outer end thereof is slidably re'ccived in the outer wall of easing 18. 'A spring 222, actingbetween thevalve casing and the bent portion of pin- 220. lend to hold the latterin its outer. position, in -10 which the bent portion thereof abuts thecasing'18 as a stop. To drain the chamber 26 at any time, it is simplynecessary to push pin 220 inwardly. This result is also accomplishedwhen the pump is locked. To

look the pump, a cap 224 (Fig. 9) is placed over theprotruding end ofshaft 44' and this cap has a pin 226 which engages pin 220 and, when thecap is forced against 10 casing, moves it inwardly to lift valve element214. The cap 224 has a slot therein to receive a lug 228 on casing 18and this lug has an opening therein, as shown, to

7 receive a padlock, whereby removal of cap 224 is prevented.

The crank arm 106 may-also belocked, if desired, by inserting a padlockthrough two abutting ears 230 and 232 .(Fig. 10) one of which is securedto the crank arm 20 and the other to stop 130.

To facilitate assembly of the vent valve 192 and discharge pipe valve180 andto permit access to .chamber 26 for various purposes, as foradjustment of member 82 and'the stuffing box 92, a hand hole 234 (Figs.2 and 4) is provided in its top wall I 72, which hand hole is normallyclosed by a plate 236 to which the sleeves 200 and 184,

supporting the described valves, are secured.

In operation, the reservoir 26 is supplied with liquid by operating thepump 20 through either of the actuating means provided,'the liquidpassing upwardly through pipe 24 into the base of the chamber.

Under normal conditions, one full stroke of the pump suffices to fillthe reservoir, but under other conditions a greater 'or lesser extent ofoperation may be required. jl-Iovw ever, the pump is operated until theliqu d 40 inthe reservoir rises above-the top of. overfl pi '80, afterwhich the pumppispbn isallowed e'rmostff ition.. Previous to and .apiferequisite to operation-of. the pump, the

45. discharge pipe 68' had to be moved to. its,

; upperm positionand, as it nearedthis positiomit -engaged and liftedvalve 180, thereby iclolsing fcharge i Should the level of fluid risetdohighin the reservoir, the vent valve fw 'll'autornatically close toprevent escape At the liquid. On ,cessation ofpumping, the vent 'alve,if closed, opens and the :liquid init e reservoir levels itself 'ofi theexcess quantity pum Ioverfiow pipe-80 into he supply tank; r Theoperator then turns the crank arm 106- to set the discharge pipe todeliver the desired-measured uantity, which then flows out pipe 66 provied the valve,' 'usually 'associated'witli hose attached thereto, isopen. Asthe QD' erator'turns "arm 106 away from stop 130 aslight,distance; the re ister 140. 15 operated 55 to indicate one-halfga on. Th s prevents" to descend to its normal and lowthe intake end ofthe dis-' "siti'ons to lock sai ed returning .through' this pip e orwith delivery 1,578,686 BEST NUABLE COPK the operator from discharging asmall quantity without registering it and is it safeguard primarilyintended fortl 'e employer,-the customer being amply rotected because hecan observe the gra nations 70 in the reservoir 26 and also the settingof .thecrank arm. The indicationsof the movement of the discharge pipeare thus v made in advance, although such indications show only half themovement, the remainder a delivery position and the pump then ope eratedto deliver 'li uid without registering it. At the end of t e dispensingoperation the pipe 68 is usually returned to its upper position so astobe in readiness for the next dispensing operatiomhut, ifnot thusreturned, it must be returned before. the

reservoir can againbe fi1led.-

It will thus be seen that the apparatus is designed not only tosafeguard the customer. bythe provision of the'transparent wall inreservoir 26,-'but also ,to prevent fraud on the owner of the employees.a The invention has disclosed herein, in an embodiment at resent pieferred, forillustrative pu wee-lint thesoo .of the invention is dne'dby ed claims w e re o ng-sw e 1" rather than byWhatLclaiinis-t-egffl;

1. a liquid. app'arat reservolo a ecip re g -mien. forcing liqui I intosaid'reservoir, neahs'i'n-Q eluding a movable operative'lyloonnt a d yor air eration of tho-pum sctflating means:

cludin 21- member" meohanicallly connected it t 6 ppistorrflfonactuating-said pump, a 'dable discharge pi e associated.

' w from 85 7 valve 180 so that the pipe cannot-be set'in apparatus bydishonest s membe .-,to' prevent 0p-.'- i

Heine -"ePP r ,"e-- i reservoir, arciproc'at-ing piston pump for forcingliquiil'into .saidIjreeervoir, means inlast-named means to preventmovement of said pipe to any of said positions during operation of sa dpump.

In a liquid dispensing apparatusfareservoir, a reciprocating piston pumpfor forcing liquid into said reservoir, means for actuating said pump, aslidable discharge pipe associated with said chamber and movabletovarious positions therein to permit discharge of diii'erent measuredquantities of liquid therefrom, a rotatable clutch element movable withsaid actuating means, a

non-rotatable clutch element adapted to mate with the first element andlock said actuating means, and meansopci'able by movement of said plpeinto any of said various positions to engage said clutch elements.

i In a liquid dispensing apparatus, a reservoir, means for supplyingliquid thereto.a slidable discharge pipe associated with said reservoirand movable from one position to various other positions in which it iseffective to permit the discharge of different n'ieasured quantities ofliquid, an operating member for moving said pipe, a cam movable by saidmember, and means operable by said cam for locking the liquid supplyingmeans against actuation.

6. In a liquid dispensing apparatus, a

reservoir, 3. pump for supplying liquid thereto, actuating means forsaidpump, a slidable discharge pipe associated with said reservoir andmovable from one position to various other positions in which it iseffec- '.tive to permit the discharge-of different measured quantitiesof liquid, an operating member for moving said pipe, a cam movable bysaid member, and means operable by said cam for preventing operation ofsaid actuating means.

, 7. In a liquid dispensing apparatus, a reservoir, means for supplyingliquid thereto. a slidable discharge pipe vertically movable in saidchamber. a rack bar the upper end of which is connected within said'chan'ibcr to the corresponding end of said pipe. a-gear casing belowsaidchamber, a gear therein meshing with the-rack bar. means operablefrom without the casing for turning said gear. anda housing enclosingthe rack bar between said casing and chamber, and a well o I its gESi '7depending from said easing into whichthe rack bar may extend.

8. In a liquid dispensing apparatus, a reservoir, means for'supplyjmgliquid thereto, a slidable discharge pipe vertically mov- 79 able insaid chamber, a member movable back and forth to setnsald pipe invarious discharge positions, and cumulative registering mechanismoperable by movement ot V said member in one direction to register halfthe quantity discharged and to register the remainder when moved inan'opposite direction to its original position,

6). In a liquid dispensing apparatus, a

reservoir, means controlling the discharge of liquid therefrom includinga member movable from one position to various others and back again, andcumulative registering mechanism operable by movement of said member inone direction to register half 'the 35 quantity discharged andtoregister the re tion.

.10. In a liquid dispensing apparatus, a

'iuainder when returned to its original posirescrvoir, means controllingthe discharge of liquid therefrom. including a member movable from oneposition in which discharge is not permitted to various others in whichdifferent measured quantities maybe dis charged, and. ciunulativeregistering mechanism operable by movement of said members; in eachdirection to totali'l'o the quantities of liquid withdrawn from saidreservoir; 11. In a liquid dispensingapparatus, a reservoir, meanscontrolling the discharge of liquid therefrom including a member movablefrom one posticn in which dis-' charge is not permitted to variousothers in which different measured quantities-may be discharged, andcumulative of the movement of said member'from any of said positions tothe next succeeding position to indicate in advance a quantity pro,-

portional to the quantity to be dispensed at the completion ofsaidmovement. v

12. In a liquid dispensing apparatus, a-

reservoir. means controlling the discharge of liquid therefrom includinga member movable from one position in Will-ell dis-.

cha ge is not permitted to various others in which different measuredquantities may be discharged, and cumulative registering mechanism.operable during the movement of said member from oneposition to anothercompletion.

153. In a liquid dispensing apparatus, a reservoir, means controllingthe discharge to indicate said movement in -advance of its of liquidtherefrom. a handle to actua'tesaid J ineans and osmllatable from oneposition in which said means is inetl'ective to discharge to variousother positions in which it is effective to discharge different measuredquantities, stops for limiting the oscillation of registering I,inechanism operable ,during the'early part i said handle one of whicharrests the latter when said means is set to discharge the max-.,

imum quantity and the other of which arrests the handle-when said meansis-set in the first-named position, intermittently operable registeringmeans, and means oporableas said handle is ,moved away from thefirst-named posit-ion and for each succeeding position except the lastto indicate.

means and oscillatable from one position in which said'mea-ns'isineffective to discharge to various other positions in which it iseffective to discharge diti'erent measured quantities, stops forlimiting the oscillation of said handle one of which arrests the latterwhen said means isset to discharge the maximum quantity and the other ofwhich arrests the handle when said means is set in the first-namedposition, intermittently operable registering means, and means operableas said handle is moved away from the tirst-namedposition and for eachsucceeding position except the last to indicate in advancehalfthequantity for which said meansis set to discharge and to indicate theother half 011' its return stroke.

15. In a liquid dispensing apparatus, a reservoir, means. controllingthe discharge of liquid therefrom,-a handle to-actuate said means andoscillatable-from'one position in which said means is ineffective todischarge tovarious other positions in which itis effective to dischargedifferent measured quantities, stops for limiting the oscillation ofsaid handle one of which arrests the latter when said means is settodischarge the I therewith, a casing enclosingthe pump leav- 1 ing an endof said shaft and said crank handle exposed, a reservoir connected tothe delivery end of. said pump, discharge means T therefor, a drain pipefor said reservoir, a normally closed valve controlling the drain pipeand located within the casing adjacent said end of the shaft, :1. coverto house such 1 end of the shaft after the crank handle is removed andcapable of being locked to said I casmg,,and means connected with thecover for opening tl drain valve when the'cover is applied to e casingto house the end of said shaft.

In testimony l'whereof I have amxed in signature.

' JOHN B. DAVIS.

